/Engine/Plugins/Media/PixelStreaming/Source/PixelStreaming/Public/IPixelStreamingStreamer.h
Send a file to the browser where we are sending video.
void SendFileData ( const TArray64< uint8 > & ByteData, [FString](API\Runtime\Core\Containers\FString) & MimeType, [FString](API\Runtime\Core\Containers\FString) & FileExtension )